SAL_WARN about unsupported dispatch requests

Change-Id: I3ee646258ed1419245a0766c79214102b08bbca1
The only SID supported by PropExec/State_Impl is SID_ATTR_UNDO_COUNT

...apparently, given that the SID_ATTR_UNDO_COUNT entry in sfx2/sdi/appslots.sdi
is the only place that mentions those functions.  That reveals that all the
other SIDs mentioned there are completely unused.  (Also, there seems to be no
need to wrap the remaining PropExec/State_Impl functionality in #ifndef
DISABLE_SCRIPTING.)

Change-Id: Iea7a41aa323b7876d316794cebe962e6e086236d
Remove dead CustomerNumber functionality

Change-Id: I221d3b9f0bf0f90a117fcf0caead52f2c31f7926